When Did I Get Pregnant? Exact Conception Calculator

Exact Conception Date Calculator

Conception & Due Date Calculator

Estimate key pregnancy milestones.

1. First Day of Your Last Menstrual Period (LMP)

2. Average Length of Your Menstrual Cycle (in days)

Days

(Common range is 20 to 45 days. Default is 28.)

Current Gestational Age:

Estimated Conception Date (The “Exactly” Date)

The most likely date of fertilization.

Estimated Due Date (40 Weeks)

Your baby’s anticipated arrival date.

Current Trimester

*All dates are estimates based on average medical models (Naegele’s Rule) and should be confirmed by a healthcare professional.